Treeing jack



June 28, 1932. j g KRIVE TREEING JACK Filed June 9. 1930 2 Sheets-Sheet1 Y An a/7707? (92/2798 flfivl e,

June 28, 1932. J. D. KRIVE 1,865,019

TREEING JACK Filed June 9, 1950 2 sheets sheet 2 Patented June 28, 1932UNETED STATES PATENT OFFICE JAMES D. KRIVE, OF ST. LOUIS, MISSOURI,ASSIGNOR TO INTERNATIONAL SHOE GOM- PANY, OF ST. LOUIS, MISSOURI, ACORPORATION OF DELAWARE TREEING JACK Application filed June 9, 1930.Serial No. 459,888.

This invention relates to treeing acks for shoes; and an object of theinvention is to provide a treeing jack for use in finishing shoes whilethe original last remains in the shoes during the finishing operation.

Another object of the invention is to provide a machine of the charactermentioned having a member constructed and arranged to engage within asocket in the shoe last While the. shoe'remains on the last, and tosupport the shoe in a relationship in which the shoe may be turned aboutthe axis of said member and finished while the longitudinal axis of thelasted shoe is approximately radial to the axis of said member, incombination with a pivoted expander for the shoe upper constructed andarranged to extend into the shoe upper and assume proper relationship tothe upper portion of the last and to remain in such position during thefinish ing operation.

Another object of the invention is to provide a machine of the charactermentioned having an expander for the shoe upper arranged in the positionstated, in combination with an opposing stretching device for engagingthe shoe upper so as to stretch and smooth the shoe upper during thefinishing operation.

Another object of the invention is to provide an improved treeing jackembodying any or all of the improved features of construction andcombinations of elements operating and cooperating for the advantageouspurposes herein disclosed, reference being made to the accompanyingdrawings, in which Fig. 1 is a side elevation of my improved machine.

Fig. 2 is a top plan view of the expander for the upper and the adjacentportion of the support therefor.

Fig. 3 is a cross-sectional view approximately on the line 33 of Fig. 5.

Fig. i is a cross-sectional view approximately on the line H of Fig. 5.

Fig. 5 is a vertical longitudinal sectional view of the upper end of themachine showing the arrangement of the devices that are operated toobtain gripping engagement in the socket of a shoe last, and the partsin the positions they occupy when a lasted shoe is supported on themachine.

Fig. 6 is a similar view showing the parts in the positions they occupywhen no shoe is on the machine.

The machine in which the present invention is embodied comprises a base1 having rigid therewith avertical tubular standard 2 which has avertical split 3 at its upper end so as to permit said upper end of thestand ard to be expanded and contracted.

A tubular frame body 4 is mounted on the upper end of the standard 2 byan arm 5 projecting into the upper end of the standard 2 and securedtherein by a clamp device 6.

A treadle lever 7 is mounted on a rock shaft 8 supported for rockingmovements in a bearing 9 rigid on the base 1, and is operative toosciilate a crank arm 10 projecting from said shaft 8 and having pivotalconnection with the lower end of a link 11. The upper end of the link 11is connected by a coupling 12 with the lower end of a link 13 which hasits upper end pivoted to the outwardly extended arm 14 of a bell cranklever. This bell crank lever is mounted on a pivot 15 in the body 4: andhas an arm 16 hearing against the outer end of a plug 17 screwed in theouter end of a sleeve 18 mounted for sliding movements in the body 4.

A sleeve 19 is mounted for turning move ments in the end of the body 4opposite from the sleeve 18. This sleeve 19 is rotatively held inposition in the body 4 by a latch 20 having one end mounted on a pivot21 in a transverse slot in the body 4 and arranged to engage in acircumferential groove22 in said sleeve 19. This latch 20 may bedisengaged from the sleeve 19 to permit the latter to be withdrawn andreplaced, as desired.

A shaft 23 is mounted axially within the sleeve 19 and is rigidtherewith, so that, when the sleeve is rotated or moved, the shaft 23must, of necessity, be rotated or moved with said sleeve 19. The innerend of this shaft 23 has an abutment device 24 screwed thereon andlocated within the sleeve 18. The outer end of the shaft 23 is formedwith a clutch portion 25.

A cooperating clutch member 26 is mounted for longitudinal slidingmovements in a longitudinal groove 27 formed in the shaft The clutchmember 26 is movable longitudinally to position in which its outer endis approximately even with the outer end of the clutch portion 25, inwhich adjustment the peripheral edge of the clutch member 26approximately flush with the peripheral surface of the clutch portion25. This is for the purpose of forming a round clutch comprising the twoparts and 26, so that they may readily be inserted in and withdrawn froma socket 28 in a shoe last 29. When the clutch is in the socket, theclutch member 26 is drawn inwardly and expanded to the position shown inFi 6 by co-acting beveled surfaces 30 on said clutch members 25 and 26,as will be readily understood by reference to Fig. 6 of the drawings.

The inner end of the clutch member 26 has a radial projection 31received in a recess in a sleeve 32 mounted for sliding movements in thebody 4 and along the shaft 23 while the shaft 23 remains stationary. Acoil spring 33 abuts against the inner end of the sleeve 19 and has aoortion thereof enclosed by a cylindrical extension 34 of said sleeve.The opposite end of said spring 33 encircles a cylindrical extension 35of the sleeve 32. The spring 33 is effective to actuate the clutchmember 26 to clutching position Fig. 6) in which the sleeve 32 isagainst the z utment 24. The lever l416 may be operated to release theclutch by moving the sleeve 18 and the sleeve 32 longitudinally alongthe shaft 23 to compress the spring 33 and bring the beveled surfaces 30to position in which the clutch is contracted. hen the bell crank lever14-16 is released, the spring 33 will immediately act to move the clutchmember 26 to clutching position. A sleeve 36 telescopes within the outerend of the sleeve 19 and is secured in rigid relationship to said sleeve19 by a set screw 37 (Fig. 1) mounted in said sleeve 19 and clampingagainst the sleeve 36.

A pair of bracket arms 38 on the outer end, which is the forward end, ofthe sleeve 36 supports a pair of alined guide pins 39, which may be inthe form of screws screwed through holes in the arms 38 and h ring theirinner ends projecting beyond the inner surfaces of said arms 38. Thesepins 39-are in axial alinement with each other andare detachably andadjustably secured in their mountings by their threaded engagement withthe arms 38 and by clamping nuts 40 screwed on the outer end of saidpins and clamping against the surfaces of the arms 38.

Leg forms of different sizes for shoes having high uppers may beoptionally mounted in the machine for cooperation with the last 29during the finishing operations. By this,

" it will be understood that leg forms appropriate to the size of theshoes that are being finished may be applied to the machine. *ach legform comprises a tubular element including approximately parallel sidewalls 41 and rounded connections 42 uniting the side walls 41 andcooperating therewith to form an appropriately shaped tube. The walis 41have widened portions 43 at their forward ends connected by extensionsof the walls 42, having a notch 44 in the front wall 42 and a notch 45in the rear wall 42. The walls flare apart, as shown in Fig. 2 and thenotches 44 and 45 receive the front and rear portions of the last 29.The flared wall terminals fit closely and smoothly against the sides ofthe last so that the high shoe upper extends onto the tube described. Asmooth inside filler is thus provided for each shoe, each fillercomprising the last 29 cooperating with the tube described. The shoeupper encloses the outer, which is the forward, end of the tube and, inoperation, is smoothed on and around the tube by ironing or otherappropriate operations.

Each of the leg tubes described has a thickend portion 46 at its rearend provided with slots 47 receiving the ends of the pins 39. A spring48 has one end seating against the sleeve 36 and the opposite endbearing against a projection 49 from the upper side of the thickenedring portion 46. The lower end of the spring is held in position by aprojection 50 extending into the spring, and the upper end of saidspring is held in position by a projection 51 from the extension 49. Thepower and energy of this spring is exerted to hold the leg tube inposition in which the rear portion of the tube is adjacent to the clutch25. The pins 39 and the slots 47 constitute a peculiar type of pivotalconnection for this purpose. The forward end of the leg tube may bemanipulated to permit the insertion of the upper portion of the last 29into the forward end of the tube, thus holding" the last and the tube incooperative relationship so that the shoe may be appropriately smoothedand finished.

An arm 52 has one end attached to the sleeve 36 and the opposite endforming a supporting connection for one end of a strong retractilespring 53. A member comprising a pair of arms 54 is pivotally connectedwith the opposite end of the spring 53 and has hooks 55 designed andadapted to engage in the eyeleted holes 56 of the shoe upper (Fig. 5) inorder to stretch the shoe and hold the shoe properly distended for thefinishing operations.

It is now clear that my invention comprises a support 23 that isrotative about an axis, and that said support is provided withcooperative mechanism for engaging the last of the lasted shoe andsupporting the lasted shoe for rotation about said axis in arelationship in which the longitudinal axis of 1 last of the lasted shoeto hold the shoe distended and stretched during the finishingoperations, in combination with resilient means comprising the spring 53for stretching the shoe upper about said expander. Further, my inventioncomp-rises the elements indicated in combination with the saidinvention. I do not restrict myself in any unessential respects, by whatI claim and desire to secure by Letters Patent is:

1. A machine of the character described comprising a rotative supportfor engaging the last of a lasted shoe and supporting the lasted shoefor rotation about the axis of said support in a relationship in whichthe longitudinal axis of the lasted shoe is approximately radial to saidaxis of said support, a tubular leg expander device. and means pivotallysupporting one end of said leg expander device in position to permit theopposite end of said device to enclose the upper portion of the last inthe lasted shoe.

2. A machine of the character described comprising a rotative supportfor engaging the last of a lasted shoe and supporting the lasted shoefor rotation about the axis of said support in a relationship in whichthe longitudinal axis of the lasted shoe is approximately radial to saidaxis of said support, a leg expander device, means pivotally supportingone end of said leg expander device in position to permit the oppositeend of said device to enclose the upper portion of the last in thelasted shoe, and resilient means for stretching the shoe upper along andabout said expander.

3. A machine of the character described comprising means for supportinga shoe last and a shoe mounted thereon for finishing operations, aunitary tubular expander for extension into the shoe upper intoengagement with the last, means pivotally supporting one end of saidexpander, and resilient means for expanding the shoe upper.

4:. A machine of the character described comprising mechanismcooperating with the original last of a lasted shoe for supporting theshoe for finishing operations in position in which the shoe is rotativeabout a horizontal axis in a relationship in which the longitudinal axisof the shoe is approximately radial to the horizontal axis, and atubular leg expander pivotally supported at one end and having itsopposite end free and arranged to enclose the upper rear portion of thelast and form a surface on which the shoe upper may be finished.

5. A machine of the character described comprising mechanism cooperatingwith the original last of a lasted shoe for supporting the shoe forfinishing operations in position in which the shoe is rotative about ahorizontal axis in a relationship in which the longitudinal axis of theshoe is approximately radial to the horizontal axis, a tubular legexpander pivotally supported at one end and having its opposite end freeand arranged to enclose the upper rear portion of the last and form asurface on which the shoe upper may be finished, and resilient means forexpanding the shoe upper along and about said expander.

6. A treeing jack for treeing shoes for finishing operations comprisinga support for supporting a last on which the shoe is mounted, a pivotedexpander member for extending into the shoe upper, resilient means foractuating said expander member to an ineffective position and yieldingto permit said expander member to telescope about the upper portion ofthe shoe last, and resilient means for engaging and stretching the shoeupper along and about said expander.

7. A treeing jack for treeing shoes for finishing operations comprisinga support for supporting a last on which the shoe is mounted, a unitaryexpander member having one end adapted to telescope about the upper rearportion of the shoe last, and means pivotally supporting the oppositeend of said expander member for adjustment to cooperate with the shoelast.

8. A treeing jack for treeing shoes for finishing operations comprisinga support for supporting a last on which the shoe is mounted, a unitaryexpander member having one end adapted to telescope about the upper rearportion of the shoe last, means pivotally supporting the opposite end ofsaid expander member for adjustment to cooperate with the shoe last, andresilient means for engaging and stretching and expanding the shoe upperon and about said expander. V

9. A machine of the character described comprising a tubular expanderdevice for shoe uppers, flaring terminal portions on one end of saidexpander device for receiving between them the upper part of the heelportion of a shoe last, a pivot supporting the opposite end of saiddevice, and a device enclosed in said expander for engaging the last ofa lasted shoe and supporting said last and said shoe in a relationshipin which the upper part of the heel portion of the last is enclosed insaid expander and in which the shoe upper encloses said expander.

10. A machine of the character described lju comprising a tubularexpander device for shoe uppers, flaring terminal portions on one end ofsaid expander device for receiving between them the upper part of theheel portion of a shoe last, a device enclosed in said expander forengaging the last of a lasted shoe and supporting said last and saidshoe in a relationship in which the upper part of the heel portion ofthe last is enclosed in said expander and in which the shoe upperencloses said expander, a pivotal support for the opposite end of saidexpander from said flaring portions, and a spring pressing said expanderin a direction to cooperate properly with the last of the shoe.

11. A machine of the character described comprising a tubular expanderdevice for shoe uppers. flaring terminal portions on one end of saidexpander device for receiving between them the upper part of the heelportion of a shoe last, a device enclosed in said expander for engagingthe last of a lasted shoe and supporting said last and said shoe in arelationship in which the upper part of the heel portion of the last isenclosed in said expander and in which the shoe upper encloses saidexpander, a pivotal support for the opposite end of said expander fromsaid flaring portions, a spring pressing said expander in a direction tocooperate properly with the last of the shoe, and resilient means forstretching the shoe upper along and about said expander.

12-. A machine of the character described comprising an expander for ashoe upper having notches in one end, flaring portions on said end ofsaid expander at the sides of said notches adapted to receive betweenthem the upper part of the heel portion of a last mounted. in a shoe, arotative support for engaging and supporting the last of a lasted shoein a relationship in which the longitudinal axis of the shoe isapproximately at right angles to the axis of said support, and means forstretching and expanding the shoe upper about said expander.

13. A machine of the character described comprising rotative means forsupporting a shoe for finishing operations, a unitary tubular expanderfor extension into the shoe upper and having opposite notches in one endfor receiving a last, means for engaging a last mounted in the shoe tosupport the shoe in position in which said expander extends into theshoe upper, and resilient means for expanding the shoe upper.

16 A machine of the character described comprising a rotary supportcooperating with the original last of a lasted shoe for supporting ashoe for finishing operations in position in which the shoe is rotativeabout a horizontal axis while the longitudinal axis of the shoe remainsapproximately radial to said horizontal axis, a tubular leg expander forthe shoe arranged to enclose the opposite sides

